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Overview of the genus Rosa in Michigan

There are numerous species in the genus Rosa naturalized in Michigan, and identification is complicated by extensive hybridization. Roses with the smallest hips are the ones most widely consumed and dispersed by birds, and some are indicated in bold in the following list. While there is variety in the size and shape of seeds, many are similar.

Rosa multiflora (Multiflora Rose) -- non-native [range map]; usually the smallest-hipped Rosa commonly found in natural areas, with seeds that are slightly larger and less numerous per hip than the native Rosa setigera. See Rosa multiflora species account)

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This is a reference guide to fleshy, bird-dispersed fruits, especially identification of seeds. It will focus on fall- and summer-fruiting plant species found in southern Michigan, but since many of these species are widespread in North America, it will be useful for a broader region. Both native and non-native species are covered.